Ventilator



L. J. BUTTON.

VENTILATOR.

APPLICATION FILED FEB. 13. I918.

1,310,327. Patented Ju1y15, 1919.

'rl-IB COLUMBIA PLANOaRAPH cm, WASHlNU'l'ON D c VE-NTILATOR.

Y Specification of Letters Patent.

Patented July 15, 1919.

Application filed February 13, 1918. Serial No. 217,015.

To all whom it may concern:

Be it known that I, LAWRENCE J. DUTTON,

a citizen of the United States, residing at Pueblo, in the county of Pueblo and State of Colorado, have invented new and useful Improvements in Ventilators, of which the following is a specification.

. This invention relates to a ventilator and the primary object of the invention is to provide a device of this character which, when disposed within a heating apparatus will prevent the accumulation of gas, which in most instances is the cause of the explosions which occur in heating apparatus employed in homes and the like.

Another object of the invention is to provide a ventilator of this character wherein provision is made for preventing cinders, ashes and the like from accumulating within the openings which allow air to pass through the ventilator.

A further object of the invention is to provide means of novel construction for maintaining the ventilator centrally of the grate of the heating apparatus in which the ventilator is installed.

With these and other objects in view the invention resides in the novel combination and arrangement of parts which will be hereinafter described and claimed.

The preferred embodiment of the invention has been illustrated in the accompanying drawing, although no restriction is necessarily made to the precise detail of construction therein shown, as changes, alterations and modifications within the scope of the claim may be resorted to when desired.

In the drawing Figure 1 is a vertical longitudinal sectional view through a portion of a heating apparatus to which is shown applied a ventilator constructed in accordance with the invention.

Fig. 2 is a bottom plan view of the ventilator.

Fig. 3 is a top'plan view of the ventilator.

Fig. 4 is a detailed sectional view upon an enlarged scale through a portion of the ventilator wall.

Like characters of reference denote corresponding parts throughout the various views in the drawing.

Referring now to the drawing in detail the letter A designates a heating apparatus which in this instance has been shown as a furnace wherein the grate 5 has mounted thereon a ventilating device B constructed in accordance with the invention.

The ventilating device B may be formed from any material suitable for the purpose and includes a hollow frusto-conical member 6 which has extendin vertically thereof rows of spaced openings The openings 7 may be of any size desired so long as they are of greater diameter at their inner ends than at their outer ends, as by gradually decreasing the diameter of the openings toward the outer peripheral wall of the member 6 ashes and cinders are prevented from 7 accumulating within the openings and obstructing the passage of air through the ventilator.

The member 6 is of suflicient height to extend a slight distance above the fuel level in the heating apparatus A and is provided in its top with a central tapered opening 8 through which air may escape from the member 6 for the expulsion of any gas which may have collected above the combustible material in the heating apparatus A.

Extending exteriorly of the member 6 through the lowermost opening in some of the rows of openings therein are a pair of crossed and detachably connected rods 9 and 10 which not only serve to prevent the member 6 being accidentally overturned in the fire-box of the heating apparatus A, but insure the member 6 being maintained centrally of the grate 5.

From the foregoing statement taken in connection with the accompanying drawing it is apparent that when the ventilator is in use, the air which enters the hollow member 6 through its open bottom will escape 95 through the openings 7 and not only promote combustion within the fire-box of a heating apparatus but will dispel any gas which may have accumulated above the combustible material within the heating appa- 1 ratus.

From the foregoing description taken in.

connection With the accompanying drawing it is apparent that a ventilator for heating apparatuses has been provided Which thou h inexpensive of construction is highly eiificient for the purposes stated.

Having thus described the invention What is claimed is A ventilator for heating apparatus comprising a hollow frusto-conical member 10 having an open bottom and vertically extending rows of spaced openings therein, the openings being provided With beveled Walls Which gradually decrease the size of the openings from the inner to the outer peripheral Wall of said member and crossed rods passing through certain of said open- 1isigs and extending exteriorly of said mem- In testimony whereof I afiix my signature.

LAWRENCE J. DUTTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

